H.5

원뿔의 겉넓이

4분기 (4~6월)

모선의 길이로 밑면과 옆면의 넓이 πr² + πrℓ 구하기 (π ≈ 3.14)

난이도

보통

난이도

문제 수

예제 포함답안지 포함

@page { size: letter; margin: 0; } @media print { .ws-page + .ws-page { break-before: page; } } Daniel Math Academy \cdot Grade 8 Math Surface Area of Cones Skill H.5 \cdot Volume & surface area \cdot ★★☆ Medium \cdot Quarter 4 Name Date Score / 6 Scan for answers Use π \approx 3.14. Include square units. Example r = 3 cm 5 cm Surface area = 75.36 cm² Think: The base circle, 3.14 \times 3^{2} = 28.26, plus the curved side, 3.14 \times 3 \times 5 = 47.1 : 75.36 in all. 1 d = 6 ft 13 ft Find the surface area. 2 r = 5 ft 11 ft Find the surface area. 3 d = 12 in 7 in Find the surface area. 4 d = 10 ft 7 ft Find the surface area. 5 r = 1 cm 11 cm Find the surface area. 6 d = 2 cm 4 cm Find the surface area. Daniel Math Academy \cdot danielmath.com Worksheet # mnef2q2 \cdot Page 1 / 2 Daniel Math Academy \cdot Grade 8 Math Answer Key H.5 Surface Area of Cones \cdot ★★☆ Medium 1 150.72 ft² 2 251.2 ft² 3 244.92 in² 4 188.4 ft² 5 37.68 cm² 6 15.7 cm² Daniel Math Academy \cdot danielmath.com Worksheet # mnef2q2 \cdot Answer Key \cdot Page 2 / 2

H. 부피와 겉넓이스킬 6개